Malicious PDF — malware analysis report

Static analysis result for SHA-256 99ddc2f3f2c96b0c…

MALICIOUS

PDF

41.2 KB Created: 2020-08-20 04:25:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 73908526c1bc47be0b0731e7d91a0f0e SHA-1: 0c61c5607566f943ff39a8109d169c397ac323bb SHA-256: 99ddc2f3f2c96b0caee422a7a8d04649bd5fdacaf2f9aab21672580a96b9a907
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a significant number of embedded links, with one pointing to a known malicious redirector. The document body is heavily obfuscated, but the presence of numerous links, many pointing to external PDFs hosted on Shopify, suggests a link farm or SEO manipulation tactic. The primary malicious URL identified is https://ttraff.com/pify?keyword=burrito+bison+mod+apk+2018, which is likely used to redirect the user to malicious 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=burrito+bison+mod+apk+2018 In PDF document text
    • http://files.ortegaartstudio.com/uploads/1/3/0/8/130874575/purisutozageveg-xafetawomuzima-rokemejop.pdfIn PDF document text
    • http://lipovu.brotherwindband.com/uploads/1/3/1/4/131438474/zebuwubos_jodelunoved_sovalomef.pdfIn PDF document text
    • http://files.uofaasce.com/uploads/1/3/1/4/131407691/1596253.pdfIn PDF document text
    • http://pusexe.safespotwilkes.org/uploads/1/3/1/8/131856372/4551985.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/1/0436/8692/0347/files/maximo_asset_management_7._6.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5044/8549/files/97363595343.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3395/9327/files/catapult_mod_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5716/8027/files/wesejepig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5603/6005/files/90060708350.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0160/1444/files/comparing_and_contrasting_worksheets_for_1st_grade.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2100/9053/files/arduino_library_reference.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6640/0663/files/vakaleletuxutuzusanu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4016/2470/files/74667555439.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8455/4135/files/acer_aspire_one_722_user_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/8750/8135/files/assignment_abroad_times_newspaper.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6707/0877/files/nupag.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000542e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x542E 5612 bytes
SHA-256: 7185601e5067c88a2febc3701ac2acccf4e149b9a9fc1ea7b6c510fe5b2424da
font_01_sfnt_off0000671f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x671F 10212 bytes
SHA-256: 669f3a28ee965f453e426b46f833cfa3667bd2efee2d0653b95437e6a0caf91b
font_02_sfnt_off000089fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89FC 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333