Malicious PDF — malware analysis report

Static analysis result for SHA-256 23cd95e54aacc352…

MALICIOUS

PDF

41.9 KB Created: 2020-08-23 21:25:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: dca4955642ed8fab73ccd7c8a52f7ff8 SHA-1: 772d5deb8d67d9d6c5b63c4060756f336c9af7be SHA-256: 23cd95e54aacc3526d384ab16b06f55b36046207636e399bc16afd4c9c4a52bd
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector infrastructure, disguised with a search query for song lyrics. This indicates an attempt to drive traffic to malicious sites, likely for SEO spam or phishing purposes. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, limiting the analysis of direct payload execution.

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=alayamlo+pravesinchandi+song++naa+songs In PDF document text
    • http://joditufew.zulfiamade.com/uploads/1/3/0/8/130815026/2624534.pdfIn PDF document text
    • http://files.szienz.com/uploads/1/3/1/4/131438018/xodijakategep.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/1/0438/2287/4781/files/bvvjdp_exam_time_table_2020_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0505/6920/files/fodetev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1447/1330/files/b_l_theraja_volume_2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/1038/1208/files/mercenaries_ps2_cheats.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2775/1321/files/zufemagelefusuviku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4954/1017/files/dl_44_application_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2494/9153/files/sony_vegas_pro_14_transitions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5441/5515/files/faustformel_anhalteweg_motorrad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7333/1609/files/chrisfix_used_car_checklist.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 1

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

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000044ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x44AE 5640 bytes
SHA-256: 338e0b18a310a8b468bd79e9b45ddacec163077b33f49e811313fb4385535b07
font_01_sfnt_off000057b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57B7 4960 bytes
SHA-256: 04b898fc5c4cf33d7769da95cafe70a2fb46b631d41d39f0d1f7293473d9a8c9
font_02_sfnt_off00006889.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6889 4276 bytes
SHA-256: 2a1494cdb38560e70c3c0a83478d31a5d16f66b240992082acbc7a00a94c414e
font_03_sfnt_off000078d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78D8 9816 bytes
SHA-256: 498adbe1bf85e644d680449f9ff0ab247a813aa3cd3211ce267bf452a686765b

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