Malicious PDF — malware analysis report

Static analysis result for SHA-256 7aa4bb55d905b128…

MALICIOUS

PDF

51.5 KB Created: 2020-08-15 03:30:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3d3c7059da2b2744c06a0a5cac1e1694 SHA-1: 57ae5aa92d1e6b99806e0072a81285bd3423ad1c SHA-256: 7aa4bb55d905b1286667cf1268073222e7202677c9a7e08b8ba484e8583d2f70
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, with a critical heuristic identifying it as a redirector and a link farm. The primary malicious URL, 'https://ttraff.ru/pify?keyword=que+es+variacion+genetica+pdf', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a lure related to genetic variation, suggesting a phishing or scam attempt. The ML classifier also strongly indicated 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.ru/pify?keyword=que+es+variacion+genetica+pdf In PDF document text
    • http://files.teamzoecancersucks.com/uploads/1/3/1/8/131871721/2021789.pdfIn PDF document text
    • http://files.rubensmachine.com/uploads/1/3/1/4/131406892/d9a63043cb9.pdfIn PDF document text
    • http://files.andlau-in-alsace.com/uploads/1/3/1/3/131380539/zivanug-fazate.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/1/0431/2812/7650/files/94575958981.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7728/0671/files/divub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7483/7925/files/arabic_numbers_1_1000.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6154/2045/files/flatten_binary_tree_to_linked_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5208/9000/files/desumit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6427/9718/files/kotogegi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tikumakosesik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1045/7753/files/dieta_astringente_para_diabeticos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0745/1041/files/puzabugerivifugevu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1361/1421/files/9356098741.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1737/9745/files/discord_no_sound_from_others.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 4

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_off000087c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87C1 5412 bytes
SHA-256: a19038148f75d243b802063e42e86b429e631915b59eef5a3c4a405704052a28
font_01_sfnt_off00009a3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A3E 11536 bytes
SHA-256: 07c0441b1278a65b5193c71ffc0fdfcfd3282be4110c34c99a5634eaed9b2bf3

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