Malicious PDF — malware analysis report

Static analysis result for SHA-256 6fa68bced2854b8f…

MALICIOUS

PDF

68.2 KB Created: 2020-08-14 01:20:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 53306b94fd6f1f7aff74b116f0035a6d SHA-1: 36a9f7b28079a6ac332ce727365ef9fa3a1307c2 SHA-256: 6fa68bced2854b8fa6678ac629e9dd121f2e42d240e34e6c6fc0e2bc150bf9bf
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains embedded links and text that direct users to a redirector URL, which is a common tactic for phishing or malware distribution. The ML classifier strongly indicated maliciousness, and the presence of multiple heuristic firings related to malicious redirectors and link farms supports this assessment. The document body, though heavily obfuscated, contains the redirector URL, suggesting an attempt to disguise the malicious destination.

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=security+master+plan+template In PDF document text
    • http://files.anzonaconference.net/uploads/1/3/1/3/131379699/4645048.pdfIn PDF document text
    • http://pafuwage.delanychiropracticcenter.com/uploads/1/3/1/3/131398140/e3bafdc53a.pdfIn PDF document text
    • http://files.girlzonedge.com/uploads/1/3/1/8/131871994/9512342.pdfIn PDF document text
    • http://files.timbercreekfieldspaniels.com/uploads/1/3/0/8/130873877/52a3eae0cf059.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/1/0434/8909/9938/files/weroxa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4419/9829/files/c_programming_multiple_choice_questions_with_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7449/4369/files/tuputew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2246/6727/files/upsc_mains_answer_sheet_of_toppers_in_marathi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0133/1360/files/pdf_reader_and_annotator_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2158/9913/files/wijusutajitosivutuzamuse.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4914/8838/files/crioterapia_facial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6534/3126/files/53823718969.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5097/5910/files/soluwelexilo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6785/9359/files/xetatugufomasinoga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0348/5092/files/distributed_algorithms_an_intuitive_approach.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5127/0823/files/komevifizemedolerizasudi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rowogumidakedodovejizana.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3551/6318/files/39025673194.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7537/0136/files/45942550581.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_off0000c133.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC133 5056 bytes
SHA-256: 0826fccd9afdf69bdca0e164b32caf9223aa9f32c7875a2d19f23ac421dcc82a
font_01_sfnt_off0000d245.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD245 10204 bytes
SHA-256: 8c190005de967fa230c7ca13b6d66a24d3d3e3cb003811bd451e59a29303ee15
font_02_sfnt_off0000f528.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF528 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c