Malicious PDF — malware analysis report

Static analysis result for SHA-256 a031195a105aeb8e…

MALICIOUS

PDF

63.5 KB Created: 2020-08-07 08:59:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4ec18b265abae2b04fd91a1232640353 SHA-1: 6b770b72293048d4252be4c25d4d09b75f96bccd SHA-256: a031195a105aeb8e1a774e352722335a341b0dc4fd40ee8f0bac0fa6b0421e6b
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to domains associated with link farms and redirectors. One critical heuristic identified a link to a known malicious redirector infrastructure at 'https://ttraff.com/pify?keyword=pdf+robotica+industrial'. The document body, though heavily obfuscated, also contains this URL, suggesting the primary purpose is to lure users to malicious sites. No scripts were extracted from this sample.

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=pdf+robotica+industrial In PDF document text
    • http://files.philbricksgenerators.com/uploads/1/3/0/7/130738892/4e6adf.pdfIn PDF document text
    • http://files.pineassociates.com/uploads/1/3/0/7/130776260/3752303.pdfIn PDF document text
    • http://files.lalomur.com/uploads/1/3/1/0/131070173/sirutunexomefikis.pdfIn PDF document text
    • http://files.boshamretreats.co.uk/uploads/1/3/1/4/131407152/wozinewefokiji.pdfIn PDF document text
    • http://files.kdsgiftboutique.com/uploads/1/3/1/6/131636855/sabezagivi.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/1/0438/5990/2624/files/lower_back_pain_nhs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3246/0960/files/14541703441.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4478/9669/files/44097946313.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2875/0241/files/ruxofudezejoveseki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5892/0605/files/19616153160.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2809/3850/files/zaxavufemevudofuzut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8148/1884/files/estrategias_de_la_cadena_de_suministros.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9078/9027/files/guwozitokinufuwadowum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2360/4631/files/42008918619.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6917/6985/files/71619107247.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1290/6405/files/boxonixojot.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_off0000af63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAF63 5156 bytes
SHA-256: 35a9df2068186bb8039f9397ee85f75aa58c3d91eb13597db9b4503fe62ef326
font_01_sfnt_off0000c0f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC0F7 14920 bytes
SHA-256: 97fbcfec7009220f4f7e2c04d51fdf8bf05860322ad21b7b4ccaffb30e2a8506

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