Malicious PDF — malware analysis report

Static analysis result for SHA-256 4103b1914b5e9a3c…

MALICIOUS

PDF

52.8 KB Created: 2020-08-17 03:13:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 87ae0760a2a4aacd88dbc9fbeed90b58 SHA-1: 27ce9790247f048a84bb3b6c305dcac1ea612727 SHA-256: 4103b1914b5e9a3c276318cde30fd425fec8e06177ab9e56b6e88099549845c5
194 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which point to PDFs hosted on Shopify and other domains. One of these links, https://ttraff.cc/pify?keyword=kavacham+argala+kilak+pdf, is identified as a malicious redirector. This suggests the document is part of a link farm designed to lure users to malicious infrastructure. No scripts were extracted, and the document body was largely unreadable binary data, limiting further analysis of the exact payload.

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=kavacham+argala+kilak+pdf In PDF document text
    • http://xivunazar.protectgladewatershed.com/uploads/1/3/0/8/130873995/1292402.pdfIn PDF document text
    • http://files.threadwood.com/uploads/1/3/0/9/130969469/xiludabelali.pdfIn PDF document text
    • http://figer.speechtherapypartners.com/uploads/1/3/1/4/131453384/vunafuke.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
    • http://fedorahosted.org/lohitIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3957/2643/files/26997478855.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6255/0940/files/balanced_scorecard_strategy_for_dummies.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rofimoluxita.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9011/5748/files/79215614589.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5463/6966/files/jopaketi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3514/7933/files/firevuvejuvunotirozod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2214/0063/files/11194031445.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4541/2261/files/pibadabuwimuwadurusi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6972/5080/files/zorij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4261/1095/files/ketogene_ernhrung_lebensmittel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/3737/1037/files/radial_engine_assembly.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006500.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6500 4860 bytes
SHA-256: 125b5c22f4a1ef718570affcca2a45ab4d366e2f2de855a218d20b5fe9bde086
font_01_sfnt_off0000757b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x757B 10048 bytes
SHA-256: 569a1d1e64d6081599e57f9eb5e6f6c09bfa75e501bb2f51714659b29f4c7983
font_02_sfnt_off000097e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x97E2 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c
font_03_sfnt_off0000a5e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA5E3 9924 bytes
SHA-256: a7a430c91cd966cf9e9b2b088e38f612ef472ead472c3f4c3bfdb1eb409d8314