Malicious PDF — malware analysis report

Static analysis result for SHA-256 79ecfaf03b689270…

MALICIOUS

PDF

37.9 KB Created: 2020-08-22 07:43:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 2243db6566f951c30eef98af91fb455c SHA-1: 7a89407522abd429b390a54826574bf814e9edd9 SHA-256: 79ecfaf03b6892707532b6e8b9c1ade2dba591e04815b6ae3bd69e68469300b0
162 Risk Score

Malware Insights

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

The PDF contains a link farm with multiple embedded links, including one pointing to a known malicious redirector. The ML classifier also strongly indicated maliciousness. The document body itself is largely obfuscated but contains the malicious redirector URL, suggesting an attempt to lead users to malicious content. No scripts were extracted, but the presence of embedded URLs and the link farm heuristic indicate a social engineering 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.
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • 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=khandeshi+song++sawan+mahina+ma In PDF document text
    • http://files.lindseymaeeventsanddesigns.com/uploads/1/3/2/6/132695663/d4748aab910.pdfIn PDF document text
    • http://files.iwillriseandshine.com/uploads/1/3/1/4/131453588/vezanabe.pdfIn PDF document text
    • http://files.downtoearth-solutions.com/uploads/1/3/1/1/131164520/23389c768e56.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4617/3852/files/28443197233.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0577/9863/files/puts_on_sunglasses_emoticon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7910/6724/files/14575450295.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2955/3575/files/73688234216.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2036/7510/files/dark_souls_2_cheat_engine_table_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6604/8164/files/4926602555.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/71299233386.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6651/3818/files/accountancy_project_for_class_11_cbse.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000044ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x44BA 5172 bytes
SHA-256: 9fe5abe761600f8f1fa02c31bca4f5cd1dee54c9d367a88b9909934d8995b62d
font_01_sfnt_off00005642.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5642 12824 bytes
SHA-256: 12ada584097fdda57a394a7f0961cc7f2e7f5a2885582c7218c8319cbca5a846
font_02_sfnt_off00007ee3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EE3 3048 bytes
SHA-256: 43dcf05397540185e86d7bb2f4da11915216bb7669b94714968c934da3945a86

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