Malicious PDF — malware analysis report

Static analysis result for SHA-256 5313a1071c590948…

MALICIOUS

PDF

34.7 KB Created: 2020-08-21 13:03:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8e625ae98c06cc5ee325e463be2d5e08 SHA-1: 22a3af2b644b2e79e0de9a0ca3f73bc5edf78972 SHA-256: 5313a1071c5909480db02c809d2e67530181fa2fc292153c87198cb90c5a627f
194 Risk Score

Malware Insights

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

The PDF contains embedded links that point to known malicious redirector infrastructure, specifically 'https://ttraff.com/pify?keyword=lagu+alyah+mengapa+harus+aku'. This heuristic firing, combined with the presence of numerous other external PDF links, suggests a link farm or redirection scheme designed to lure users to malicious content. The document body, though heavily corrupted, contains fragments of the malicious URL, reinforcing the attack vector.

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=lagu+alyah+mengapa+harus+aku In PDF document text
    • http://kibuzu.nikospsaltopoulos.com/uploads/1/3/2/7/132712207/8734225.pdfIn PDF document text
    • http://xuwiv.maggiezlatanova.com/uploads/1/3/1/3/131378814/vijixanixuwexe_sovajosegi_nasabaji.pdfIn PDF document text
    • http://xajunuv.regisacademykc.org/uploads/1/3/1/3/131398140/tutivizijunid-fusiged-raweni-pudovexa.pdfIn PDF document text
    • http://files.vibrant-energies.com/uploads/1/3/0/8/130873907/nomadu.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/1/0428/9835/8432/files/21244882445.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9162/4096/files/32671348636.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3531/0752/files/aptoide_older_version.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4528/0161/files/estado_financiero_definicion.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5206/4155/files/gunofewofeparomo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2905/4118/files/63343619006.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6647/5174/files/73709552833.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1344/7581/files/tumunejijisut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0427/1524/files/einthusan_hd_movies_tamil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0785/1171/files/63688486405.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6354/8833/files/52291452074.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4015/2475/files/alkaline_foods_cookbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1109/4174/files/25100770276.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 8

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_off00004ad0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4AD0 5340 bytes
SHA-256: a66e35afbb5258b2b426ccb82ab6fef7d6b856630c2a5f88bac575a3a0ff9206
font_01_sfnt_off00005cdc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CDC 9644 bytes
SHA-256: 85bbebedfedcb0122423f13692cd1bebf6038579bd61d2d673542a0fb271a44e

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