Malicious PDF — malware analysis report

Static analysis result for SHA-256 165e017923bf0502…

MALICIOUS

PDF

35.0 KB Created: 2020-08-20 08:49:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5ada1382a0e7323b1a9ac239273dd186 SHA-1: 54ae4b1fa60edad0f233926b02100e6584251391 SHA-256: 165e017923bf0502662283c3bd5bdb72b2cf17b380d671576eae68a2038cfb4b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links, with a critical heuristic firing indicating it's a redirector link farm. The primary malicious URL identified is https://ttraff.com/pify?keyword=name+ringtone+mahesh, which is likely used to direct users to a phishing or malware-hosting site. 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.com/pify?keyword=name+ringtone+mahesh In PDF document text
    • http://jajuf.biocompositesgroup.com/uploads/1/3/1/4/131408024/bumosixolelidowoko.pdfIn PDF document text
    • http://ravebemit.trekking-romania.net/uploads/1/3/1/4/131407227/lemoxomunulabumaliku.pdfIn PDF document text
    • http://wurubuk.urban-conservatory.com/uploads/1/3/1/3/131380213/da6fdd9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/39738284996.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8094/9659/files/femipizoni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/1274/6390/files/wadokosokasob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2957/6352/files/spm_miss_perfect.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/3809/3990/files/coconut_song_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6905/4886/files/gana_achu_sari_sari_song.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7198/7098/files/776949921.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6974/4028/files/scholarship_form_maharashtra.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9324/5590/files/44269797749.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9014/0583/files/supemavokejetijo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0865/4492/files/cantos_para_novenario_de_difuntos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9304/0029/files/15248735520.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0460/7059/5748/files/abstract_wallpaper_4k_free.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004e79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4E79 5036 bytes
SHA-256: 2a1d1ed484f517e4b910e0ee0d114c15ff411ece024dc699210956cf17bd65e3
font_01_sfnt_off00005f6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F6F 9384 bytes
SHA-256: d4c9572edb9b89038f22ac542efbdf39147e2602f95567f9c4b3231ac25ff227

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