Malicious PDF — malware analysis report

Static analysis result for SHA-256 900d2fb7a1ab2d70…

MALICIOUS

PDF

42.1 KB Created: 2020-08-19 06:06:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5db35a7a73c1ebb9c1d0abc2d5584cfa SHA-1: 188a1a6f49b54852579120570071b48df0931214 SHA-256: 900d2fb7a1ab2d706071842b828afe99ceed77877994715cdb47bea900db74bd
194 Risk Score

Malware Insights

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

The PDF file contains a link that redirects to a known malicious domain, disguised with text suggesting a performance self-evaluation sample. The file also exhibits characteristics of a link farm, with numerous embedded URLs pointing to external resources, many of which are hosted on Shopify. The primary malicious URL is https://ttraff.cc/pify?keyword=performance+self+evaluation+comments+sample, which is flagged as a malicious redirector. The document body itself is heavily obfuscated but contains the malicious URL and several other URLs, some of which are confirmed benign.

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=performance+self+evaluation+comments+sample In PDF document text
    • http://files.cvillechambermusic.org/uploads/1/3/1/4/131483371/fedupujunoredo.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/1/0434/8179/2664/files/gobowozofimu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9273/0275/files/39681901790.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6300/8664/files/a_level_computer_science_9608_notes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7650/9080/files/difference_between_active_and_passive_components_in_electronics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2668/5850/files/basic_financial_accounting_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7420/8415/files/38519734327.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8893/7120/files/93412878341.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3025/7568/files/wulakomizevobu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4296/3613/files/kifekutorirugolo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8022/0826/files/88584341298.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3529/5905/files/sql_developer_formatter_not_working.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 2

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_off0000679a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x679A 5220 bytes
SHA-256: 322bc06c475b784ccb64f40f2a1530e5d54eb59823bba948cd073e3d3855bb7d
font_01_sfnt_off0000794a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x794A 10060 bytes
SHA-256: cc0b9b882deb5fd6968ed2eaa2b4191a8aa34ffde75d9dbcde43baefb5516a0c

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