Malicious PDF — malware analysis report

Static analysis result for SHA-256 e42d68ffa2a315e4…

MALICIOUS

PDF

72.6 KB Created: 2020-08-25 14:23:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1b9383ca2e93c2436816b2dc6447d79d SHA-1: d60570b65149f35ae1bd70311ade6ec215d8851b SHA-256: e42d68ffa2a315e4045102617af458d413078b9134b251b5a6be3a95caef148c
194 Risk Score

Malware Insights

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

The PDF contains a lure for an advance-fee scam, indicating a fraudulent intent. It embeds numerous links, including one to a known malicious redirector at `ttraff.ru`. This redirector is likely used to obscure the final destination, which is probably malicious. The document body, though heavily obfuscated, contains the redirector URL, reinforcing the malicious link's presence.

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=computer+application+in+mechanical+engineering+pdf In PDF document text
    • http://files.iooftxgreaterhouston.org/uploads/1/3/1/3/131384113/2729096.pdfIn PDF document text
    • http://roguvu.lunarhillicelandics.com/uploads/1/3/1/4/131437919/manisigopewuxesu.pdfIn PDF document text
    • http://paxile.pattyspetalsgodfrey.com/uploads/1/3/2/8/132814343/vumirodazisoj.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/1/0450/8683/4851/files/tapixudo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8379/2548/files/brigitte_hamann_erzsbet_kirlyn.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1918/1978/files/sch-_i800_cyanogenmod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8919/9268/files/52094437294.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4416/7064/files/disaster_report_4_north_america.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0459/6255/9648/files/23673951097.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2937/2821/files/rotojupudifezurifabofevaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6643/3435/files/xuberev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3651/5224/files/xakuziliwelewakazaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9066/3832/files/difuwazapexegelus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2646/3392/files/superman_wallpaper_3d_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1231/5545/files/qcm_histologie_de_l_appareil_digestif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3192/8730/files/vuvuxopanifakizamib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1475/6251/files/the_flatshare_book.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_off0000d09d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD09D 5296 bytes
SHA-256: 20f6b09c5147b4b3e34e14b791e0f2faf8f9c4d5b3319e75822f26486ed77cb7
font_01_sfnt_off0000e26e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE26E 10636 bytes
SHA-256: 40f8d75c84c8d1bb6105f86525b1d68e5b6c54dc761fd80a7d9b15af0ac24bde
font_02_sfnt_off000106c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106C2 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e