Malicious PDF — malware analysis report

Static analysis result for SHA-256 d08d548528214a0a…

MALICIOUS

PDF

45.6 KB Created: 2020-08-12 05:26:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 24fcf0cc38146104ec799a95c17f0fae SHA-1: c79360f2e91462b5a08e9159771a75d9203ad871 SHA-256: d08d548528214a0ab573340b4289e359910b6ddfce5a444124dd7d3dabafb611
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains multiple embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'invoice' and 'important english words', aligning with the 'SE_INVOICE_LURE' heuristic. The primary malicious IOC is the redirector URL, which likely leads to further malicious content or exploitation.

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=important+english+words+used+in+daily+life+pdf In PDF document text
    • http://files.rachelskaufman.com/uploads/1/3/0/9/130969592/8395329.pdfIn PDF document text
    • http://files.dogfriendlyrentalsonsanibel.com/uploads/1/3/1/3/131383358/zaresedup_gijade_totikokab_mibezebodex.pdfIn PDF document text
    • http://files.nick-paul-dive.com/uploads/1/3/0/8/130873923/3243546.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/1/0432/3826/0899/files/la_campanella_guitar_tab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/jepomosojavadoji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0491/2031/files/24557833532.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2621/1238/files/budizaxa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1927/0306/files/mutujoganavabi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3765/4178/files/73356598401.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4381/4556/files/likif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7016/0032/files/52578586458.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2358/9788/files/emergency_action_plan_checklist.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4074/1275/files/90732072269.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7098/0245/files/ncert_class_10_english_literature_reader_book_download.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_off00007247.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7247 5588 bytes
SHA-256: 7d5ef7c8efe77af11cccc6d20752504e9e48eb0de1978e639e3973f88bd38c1b
font_01_sfnt_off00008523.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8523 10472 bytes
SHA-256: efeb64b8d902d5d59c2360a4366addfe54d0cedaf550dfd7cfb4c61d0402da16

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