Malicious PDF — malware analysis report

Static analysis result for SHA-256 7104fbb10de9a074…

MALICIOUS

PDF

44.6 KB Created: 2020-08-01 12:06:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 27d3d0ca2abe12a97b5340099b5d7d51 SHA-1: cbc4aa31e8f4239cf1d9e3d174d4eb3ef1d18e25 SHA-256: 7104fbb10de9a074beb27ce9dd61b349d37e311c88b09cc490da65a68ee52cd8
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded links, many of which point to redirector infrastructure. The document body text, though garbled, contains a URL that is also present in the heuristics, indicating a lure for users to download content. The ML classifier strongly flagged this PDF as malicious, and the presence of redirector links suggests an attempt to lead users to malicious sites.

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=the+american+republic+since+1877+answer+key In PDF document text
    • http://files.shopshipnmore.com/uploads/1/3/1/4/131453595/fa82bc45dbf46c.pdfIn PDF document text
    • http://files.dongarbutt.com/uploads/1/3/0/9/130969054/fatimixefovepuk_jimapoto_pevoboxupubere_voruzo.pdfIn PDF document text
    • http://files.impossiblefarmher.com/uploads/1/3/1/4/131410234/rinoxufu.pdfIn PDF document text
    • http://files.sidbollywood.com/uploads/1/3/2/6/132682232/fde5f76c10ae1d.pdfIn PDF document text
    • http://files.albuquerquerenovation.com/uploads/1/3/1/6/131606003/97d9467cc8e0de.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/1/0432/0644/3176/files/dusexex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6726/8517/files/43805532162.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7346/9597/files/49949296129.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3170/7294/files/34092437526.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3803/1518/files/p._s._meaning.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5162/2306/files/sogevixu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8962/5250/files/megoguxuwerobebifep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6135/4389/files/88390010897.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4953/3088/files/pojofas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9268/0605/files/67566021723.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5863/3631/files/lutoxojebijat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1994/3579/files/ds3_parting_flame.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4179/1895/files/lezaruri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9102/4280/files/kiwivetuxomi.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006080.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6080 5540 bytes
SHA-256: e0ab445ddc6f59454534137d143d708cfd8715f60888979140c4c8b54a1f8ec9
font_01_sfnt_off00007338.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7338 9960 bytes
SHA-256: 0c34ed707e056d98694daf8f5a0e9a09958762b469ebfb093acecc12d897f200
font_02_sfnt_off000094e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x94E9 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e