Malicious PDF — malware analysis report

Static analysis result for SHA-256 34db48cddfb7e441…

MALICIOUS

PDF

49.2 KB Created: 2020-08-07 07:48:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a4e943bbece299d6d17bf8092dcf7fb4 SHA-1: 3fa168b029f7cdb4203ea9820f7eac85b7755cbe SHA-256: 34db48cddfb7e441a33b7ea88b22e60a6e998c623709241316ab2457cc71fc6d
194 Risk Score

Malware Insights

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

The PDF document was flagged as malicious by multiple heuristics, including a critical finding for a malicious redirector link and a PDF link farm. The document body, though partially corrupted, contains text related to 'basic electronics components definitions pdf' and the malicious URL. The primary attack pattern involves luring users with a seemingly educational topic and then redirecting them to malicious infrastructure via a hidden link farm.

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=basic+electronics+components+definitions+pdf In PDF document text
    • http://files.taymun17.org/uploads/1/3/0/7/130775180/xujiwugadamevevojima.pdfIn PDF document text
    • http://files.yogaforkidsportland.com/uploads/1/3/1/4/131437157/4a08df34.pdfIn PDF document text
    • http://files.ebbandflowadventures.org/uploads/1/3/2/7/132712034/2432227.pdfIn PDF document text
    • http://kigixu.wanjirunjoya.com/uploads/1/3/0/9/130969772/wipixif_joxanuwatuver_moruf_gimeloputag.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/1/0435/0253/4822/files/halo_encyclopedia_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8071/2343/files/7265715434.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0688/5027/files/jurufesapodon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6734/1981/files/guvakoniravi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3165/6605/files/95241851833.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0070/9791/files/63532356392.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1576/5153/files/red_cross_bls_handbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/12091312038.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3770/4867/files/12287098906.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/koxumugude.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4146/5244/files/ib_biology_review_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bovegutug.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_off00007c87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C87 5348 bytes
SHA-256: a688cdcc876a089cf10891d2d63128d0a0bdec0481f1c94ff53019b14129f9c8
font_01_sfnt_off00008e9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E9C 13000 bytes
SHA-256: 2ba565abb662efadf629801feee71c7dba19a42fbe90d448897979f3c1d1b5a1

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