Malicious PDF — malware analysis report

Static analysis result for SHA-256 036e84e1f126385f…

MALICIOUS

PDF

55.8 KB Created: 2020-07-24 20:12:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 34d276486b6629082c7d0c5ddcf49a01 SHA-1: af473d134c755438a7d59c58af10fd0f57b77abc SHA-256: 036e84e1f126385fa7fece6fbf134ae4dbbd81650a7e6b16b2755d4695cfe09d
194 Risk Score

Malware Insights

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

The PDF contains multiple links pointing to a redirector URL, identified as malicious. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of outbound links, suggesting an attempt to manipulate search engine results or distribute malicious content. The ML classifier also strongly flagged this PDF as malicious. While no scripts were extracted, the presence of malicious redirector links and the overall structure strongly suggest a phishing or malware distribution attempt.

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.ru/pify?keyword=promega+luciferase+reporter+assay In PDF document text
    • http://files.patriciagodden.com/uploads/1/3/1/4/131483019/5adf2.pdfIn PDF document text
    • http://files.ccumc.us/uploads/1/3/0/9/130969220/faguxuzusafotut.pdfIn PDF document text
    • http://files.michelprincebooks.com/uploads/1/3/0/7/130775277/5551867.pdfIn PDF document text
    • http://files.iproclaimit.com/uploads/1/3/2/6/132681812/kogawagatisubom-negoguwoj-supuzowobasuj-zaxonugono.pdfIn PDF document text
    • http://files.pegasuscharter.org/uploads/1/3/0/8/130814597/lixizu-jovasos.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/1/0429/3741/7891/files/mojalitevakulododeki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0029/8648/files/labikuma.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1791/8870/files/sinozefikenaganapo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6397/5835/files/varuxarope.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6159/9643/files/46199230122.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8000/0422/files/56920074677.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2650/5118/files/45168094599.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3696/7063/files/bubukimupapovotukuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8305/4757/files/badazasosujizemewaxaduse.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
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007721.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7721 5216 bytes
SHA-256: 3bc5fb277e57d37c883e7f41e11478e797f69fec23df978fc19e8d8ec33e25ea
font_01_sfnt_off000088ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88EF 4900 bytes
SHA-256: 22e614f70662915bb741154388250ca1446fec442c811913ca938b54c1b095e8
font_02_sfnt_off000098e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x98E5 2140 bytes
SHA-256: fa98316bad0ee393e4244be63b1d230beb4724cf855be96ad4f2c87a5b302ae2
font_03_sfnt_off0000a2bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA2BF 14828 bytes
SHA-256: 58b68ddc242eb2d63d5b44ceacaaa3f3e3b671a7b8127e28da055111dd198eaf