Malicious PDF — malware analysis report

Static analysis result for SHA-256 78b905581cba51b9…

MALICIOUS

PDF

44.0 KB Created: 2020-08-19 03:45:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0b7d190defaaeda2e30601a2e2288ff5 SHA-1: 20130fdfb83564a6813c1ae730633bb57cdcf348 SHA-256: 78b905581cba51b968f2f9b8f8000538891e30e9c55a4a5626da00a6f733c6b2
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, many of which point to a redirector service (ttraff.cc) that is known to host malicious content. The document body, though heavily obfuscated, contains the same lure text and URLs, suggesting an attempt to trick users into downloading potentially harmful files or visiting malicious websites. The ML classifier strongly indicates maliciousness.

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=template+of+motivation+letter+for+university In PDF document text
    • http://files.staceyagdern.com/uploads/1/3/1/3/131398377/nawojoperudo_julufemamajusur.pdfIn PDF document text
    • http://mujek.versaillesfourthofjuly.com/uploads/1/3/1/4/131482962/11065356076b.pdfIn PDF document text
    • http://weboka.storiesbyeli.com/uploads/1/3/0/7/130738837/nevibu_zosidigifajis_peguz_nugoviwerusawuk.pdfIn PDF document text
    • http://files.showmeshortlineblog.com/uploads/1/3/1/8/131856163/8cf0b3.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/1/0433/5419/4085/files/badlapur_full_movie_720p.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1887/7085/files/loctite_263_tds.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7405/9430/files/76870110231.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2281/0263/files/nine_inch_nails_only_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7929/5383/files/wezakutizijaji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0803/1893/files/basic_java_interview_questions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2151/6449/files/kuxikenemuwiso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6130/5756/files/rekituxo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6262/3394/files/fumimojob.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 5

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_off00006e17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E17 5156 bytes
SHA-256: 3d63ed92588b2510c4b81d6f5b5312ddf15b96abb45ed7ff3c2de619b7620334
font_01_sfnt_off00007f99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F99 10404 bytes
SHA-256: 26f91a54becc714cb7d119f565f6b111f709cd39cc40cf7ae30e23adc99d5a48

Open this report in the interactive analyzer, or submit your own file for analysis.