Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa15895106e80258…

MALICIOUS

PDF

41.9 KB Created: 2020-08-23 09:14:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 31f1683814d340a45af6a468f4d1acde SHA-1: 35c8fd8688a9599ff02fe3bdb2a5ea7c43eeefba SHA-256: fa15895106e8025840198dea1073f1cedeb8008d2d3bc33abf3401c0b3d6ec45
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains multiple embedded URLs, with one identified as a malicious redirector. The document body, though partially corrupted, includes text suggesting a lure for 'adding worksheets free printable' and a call-to-action phrase. The primary malicious URL, https://ttraff.cc/pify?keyword=adding+worksheets+free+printable, is likely used to redirect the user to a malicious site or download further malware. The presence of a large number of external PDF links, many pointing to Shopify, suggests a link farm SEO tactic to improve search engine ranking for malicious content.

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.cc/pify?keyword=adding+worksheets+free+printable In PDF document text
    • http://files.heuercadostudios.com/uploads/1/3/0/7/130738801/kaxigozowisesenuzi.pdfIn PDF document text
    • http://files.inbetweentheories.com/uploads/1/3/2/7/132712326/golenovenimadira.pdfIn PDF document text
    • http://files.irishrockboers.com/uploads/1/3/1/4/131438093/nisesogusadil.pdfIn PDF document text
    • http://files.branchlutheranschoolshaiti.net/uploads/1/3/1/4/131453061/7816972.pdfIn PDF document text
    • http://wuwezebom.brooklandplace.com/uploads/1/3/1/3/131380213/bijavoride-zomive-tidapozokodetin-fobowudatumifod.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/1/0433/9400/7191/files/moviebox_for_macbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6275/3445/files/public_relations_writing_rachmat_kriyantono.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5661/0969/files/6589404305.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5460/4198/files/93715748065.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/2444/5603/files/centroides_de_figuras.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1015/4908/files/28491881302.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6862/8890/files/388328953.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2379/4337/files/78857340048.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8272/7067/files/pumeza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9815/2866/files/dazase.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/5814/5953/files/dadisopilelama.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6795/7660/files/conduction_of_heat_in_solids_carslaw_jaeger.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006092.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6092 5588 bytes
SHA-256: c0189da3e551a098cbea6db73ef5b8aae91181371931f42f7b679c4bb49520c3
font_01_sfnt_off0000739e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x739E 11604 bytes
SHA-256: d6f766d4c0c7e38aa52ac4a851667a101b3e1d68e66eaf69eab2929f700bc18e