Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5f5bbfafe6e4840…

MALICIOUS

PDF

41.2 KB Created: 2020-08-25 05:27:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: aae7866cb25bdb2043597785c0a0d052 SHA-1: 79daf375355d773c2ab5d433f48ba4e663935aa2 SHA-256: a5f5bbfafe6e484067d06c92399a462dc4e12a1e9d34bb8a960302eea4768a8c
194 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics for containing a malicious redirector link and a large number of external links, suggesting an SEO poisoning or phishing campaign. The embedded URL 'https://ttraff.cc/pify?keyword=love+birds+photos++free' is a known malicious redirector. The document body, though heavily corrupted, contains fragments of this URL and other PDF links, reinforcing the finding of a link farm.

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=love+birds+photos++free In PDF document text
    • http://gasudup.dropbucketmarketing.com/uploads/1/3/1/4/131407921/sixoviviwa_satopalapoda_nekit_fubalupuv.pdfIn PDF document text
    • http://dolizaw.bodymindnurture.com/uploads/1/3/2/6/132695829/jisove.pdfIn PDF document text
    • http://gixoz.leftanglebeta.com/uploads/1/3/1/3/131379578/welobavo.pdfIn PDF document text
    • http://files.shopstudio233.com/uploads/1/3/1/8/131871780/dc6bb3.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/1/0428/7240/6179/files/85290961963.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7631/2471/files/19749585922.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0841/8211/files/oceanography_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9698/0136/files/line_manager_meaning.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5906/1670/files/cancionero_de_guitarra_boleros.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7793/5005/files/48130911685.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/8617/9480/files/mobius_aromaticity.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4980/3162/files/bokizukixirujulogasa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/2500/6497/files/16486319641.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2381/9164/files/telugu_bible_quiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0143/0695/files/18446403813.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7939/1646/files/6143453087.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3157/6231/files/aplastic_anemia_in_pregnancy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2097/4242/files/cattiva_condotta.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 3

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_off00005a91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A91 5028 bytes
SHA-256: 012e04b8119e13a777cadcd10baa0bb03d4421cca665d1120ae2fc5e16be43f2
font_01_sfnt_off00006bb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BB2 14160 bytes
SHA-256: e6444f0172010ee03f43c6fe01393421c223fa768604d0518da827ba4d25795a

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