Malicious PDF — malware analysis report

Static analysis result for SHA-256 02e895dc57b655cb…

MALICIOUS

PDF

50.2 KB Created: 2020-08-03 23:12:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 9844dcb3fc3c2f8ab464d2c72c0a54e8 SHA-1: ced98595fdadf15b55b94453e64a563c1fdee101 SHA-256: 02e895dc57b655cbbe00fffe5f2450e748e53e05e5d5303e75d2bf8c6abaf661
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many pointing to a redirector service (ttraff.com) which is flagged as malicious. The document body, though heavily obfuscated, contains text suggesting a lure related to "Treatment of brucellosis pdf" and includes the malicious redirector URL. The presence of a link farm and redirector indicates a phishing or scam campaign designed to lead users to potentially harmful content.

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=treatment+of+brucellosis+pdf In PDF document text
    • http://files.cottlewolly.com.au/uploads/1/3/0/8/130813906/8681290.pdfIn PDF document text
    • http://files.nzpics.com/uploads/1/3/2/6/132682471/7405284.pdfIn PDF document text
    • http://files.danielmarkos.com/uploads/1/3/1/8/131871416/relafud_pojukukuja.pdfIn PDF document text
    • http://files.uclhsoc.co.uk/uploads/1/3/1/3/131380356/98045a3b24.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0938/4343/files/rabediloxibiguju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9617/8845/files/zazinagevukujo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5281/7832/files/togijotewidutok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5799/5160/files/wemujexapug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1618/3205/files/rimotowa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3123/2674/files/18563911004.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8094/9659/files/gufonokubexunupu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7121/8588/files/aaron_smith_dancin_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zenafepejeviwasi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4995/1138/files/befevosodop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6916/1110/files/visazaludimemuva.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

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000065d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65D7 4772 bytes
SHA-256: 63a64f6c5ee46baf61d64d834d303d93c016330e25b52587fbfeac58b1f61bc6
font_01_sfnt_off00007689.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7689 5272 bytes
SHA-256: 74df4c41747bda0a5dcaac6fd0ac61af54975084f8b30fb609846061d54f7882
font_02_sfnt_off00008851.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8851 10824 bytes
SHA-256: f80ccfa4ce0b4516abd71b880b8b076879aadd46eccef9abed9545380462a5db
font_03_sfnt_off0000ad14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAD14 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361