Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd24b2af220e106a…

MALICIOUS

PDF

67.3 KB Created: 2020-08-12 16:28:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1dbfc9c7793a15df06b2c88d67780d17 SHA-1: bc49f03c066d1d2a9c6f63963b0d61a099b0242c SHA-256: bd24b2af220e106a55fac95e83e1cbec6bd21e6aa4e56e980ca5935bbcfc15dc
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a significant number of embedded URLs, forming a link farm. One of these URLs, https://ttraff.cc/pify?keyword=durga+saptashati+pdf+telugu, is identified as a malicious redirector. This suggests the document's primary purpose is to lure users to malicious sites, likely for phishing or to download further malware. The ML classifier strongly supports the malicious nature of this PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.cc/pify?keyword=durga+saptashati+pdf+telugu In PDF document text
    • http://files.rainbowschoolmn.org/uploads/1/3/1/6/131606878/gulifefejalux.pdfIn PDF document text
    • http://worenokop.youngworlddayschool.org/uploads/1/3/1/6/131637016/suvobawusonav.pdfIn PDF document text
    • http://files.getfireworksdelivered.com/uploads/1/3/1/1/131164176/nidafu_gogokibu_boxikobodil_xenudovana.pdfIn PDF document text
    • http://rajosewop.kimberlyandersonritchie.com/uploads/1/3/0/9/130969723/f62fe6f71.pdfIn PDF document text
    • http://pusox.aklcbc.org/uploads/1/3/2/6/132681231/4106420.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2515/3698/files/vejegubi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4976/3487/files/35407289040.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/0860/1762/files/characteristics_of_product_life_cycle.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2929/1427/files/test_psicologico_del_arbol_casa_y_persona.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9059/2422/files/future_stick_talk_mp3_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6680/9765/files/58263259713.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7188/7767/files/10403107110.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5370/3590/files/3469256779.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8362/8708/files/definicion_de_actitud_negativa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7567/4014/files/66798588452.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5757/8138/files/data_structures_and_algorithms_in_swift_raywenderlich.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8858/4605/files/nabogeluze.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005f61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F61 5300 bytes
SHA-256: dcaf20638c5e641a9b8c87f000fb44afc824563451af55ec74ce9636b49ca296
font_01_sfnt_off00007169.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7169 2656 bytes
SHA-256: ff8289fcab20b7b81f5dc7c47458689637225d7099c48932a46d6898d6123f6c
font_02_sfnt_off00007c70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C70 2328 bytes
SHA-256: 18b250f24057ce91e4a59b25c1eec79fa8b4d7e2cb9f6c0de02c7e032a072fd4
font_03_sfnt_off00008726.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8726 29736 bytes
SHA-256: a63f067c524b53c6c5baf22e296657236408905476369aebd608429cc0903b46
font_04_sfnt_off0000c57c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC57C 14120 bytes
SHA-256: b842e402390b30e24378d5f8b17418c84cdafc149ff9019b5fd113da59bd4b5f
font_05_sfnt_off0000f0f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0F8 2960 bytes
SHA-256: 190ac0db8f78cd8fcf422397478b27140b8533199913ec670c089a76cf0db358

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