Malicious PDF — malware analysis report

Static analysis result for SHA-256 dff3a16d3deaf5b1…

MALICIOUS

PDF

37.1 KB Created: 2020-08-21 01:41:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b393cf5a6281f7ab13ab1ef362d252bb SHA-1: 488182741993b832ec6c41c4496a802bc886b4b9 SHA-256: dff3a16d3deaf5b1899fbdcdb2cba85c41a7abdf47975c642cf838eafda075db
194 Risk Score

Malware Insights

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

This PDF file contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector at 'https://ttraff.cc/pify?keyword=bernina+1008+sewing+machine+service+manual'. The document body, though heavily obfuscated, contains text related to a 'Bernina 1008 sewing machine service manual', suggesting a lure to disguise the malicious intent. The presence of a large number of external PDF links, many hosted on Shopify, further indicates a link farm or SEO poisoning tactic to distribute malicious content.

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=bernina+1008+sewing+machine+service+manual In PDF document text
    • http://files.serviceprograms.org/uploads/1/3/0/7/130739032/599184.pdfIn PDF document text
    • http://files.shermanfp.com/uploads/1/3/0/8/130874615/zewadowepakejafe.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/1/0429/2752/1948/files/bepekomagevelevunup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0571/4338/files/nikejutaduzowi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4615/0039/files/90081245778.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4872/2851/files/67751557271.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2363/7402/files/momipexifefa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9375/2997/files/computer_parts_information_in_marathi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/femepotufitaxaturu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2178/5498/files/addition_reaction_of_alkynes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4599/4146/files/90s_anime_movies.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7790/1214/files/70910799613.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3591/7464/files/88041332746.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0754/1401/files/guxexetumadizebawamoj.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 5

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_off0000452d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x452D 5496 bytes
SHA-256: fc242c4baead81c9f81c0e0b4d477b38fda8522d5936f098873e6ab637095cd4
font_01_sfnt_off000057b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57B7 9864 bytes
SHA-256: da6bd75d810fa677b137c3bbf68f792c904fdf34b6bb8edff296e165d01a7fe0
font_02_sfnt_off00007944.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7944 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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