Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0174bede1bcdfa6…

MALICIOUS

PDF

56.7 KB Created: 2020-07-30 11:46:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0f767c5edc928d087d73e9680ed4dd0b SHA-1: 8365e7d14252206884ac92e30921dc15bba65994 SHA-256: a0174bede1bcdfa6a478e02023e90a83ce28a44720ce1fe687885f7ba694555a
202 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link pointing to 'ttraff.com', which is a known malicious domain. Additionally, it hosts a large number of external PDF links, many hosted on 'cdn.shopify.com', suggesting a link farm or SEO poisoning tactic. The presence of a 'download button' heuristic further supports the lure-based attack pattern. No scripts were extracted, limiting the analysis of direct payload execution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=ncert+english+book+class+4+pdf In PDF document text
    • http://files.straystreetstnr.com/uploads/1/3/0/7/130775107/nasuketalawavemefu.pdfIn PDF document text
    • http://files.donnajthomasartist.com/uploads/1/3/2/7/132712214/3741162.pdfIn PDF document text
    • http://files.swcaasouthwest.com/uploads/1/3/1/0/131070619/6a991e2d7a.pdfIn PDF document text
    • http://files.just4womendoc.com/uploads/1/3/1/3/131384025/58dbb8c76c.pdfIn PDF document text
    • http://files.obgynassociatespc.com/uploads/1/3/2/6/132680796/sefikeb-pomonewitatuwox-wixozowesizak-jazuralewa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7870/3521/files/73428221652.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8896/0933/files/pepiwudobegipoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9807/9399/files/xavifaxadilivunabek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zofoxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6249/3345/files/48388473020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6078/9409/files/50938226181.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9494/0573/files/72294569801.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4775/3640/files/74560479484.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1671/5429/files/gowiz.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_off00008486.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8486 5464 bytes
SHA-256: e9b1fb999f87904cea11c7eeac9ff81332bc1319151bd18e0317a67273c0c7eb
font_01_sfnt_off00009712.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9712 10252 bytes
SHA-256: 425dac44cab7fd14291f23f8d5003e772ddc0fb02079b38e58a199f567b31087
font_02_sfnt_off0000ba13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBA13 8004 bytes
SHA-256: dee6cee333d7d31a37f8b9436ee873576b5c485b5c9c3d8e306af2f82861c227