Malicious PDF — malware analysis report

Static analysis result for SHA-256 68b2c10e67bc7184…

MALICIOUS

PDF

45.4 KB Created: 2020-08-05 09:25:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dd3818dfa2f166dd46a1a7f52ea3f519 SHA-1: aa160c94b922fbf05143e9f957576945eac9392e SHA-256: 68b2c10e67bc7184d62cc7cc8f34ac23365228c7586da8e678601bacfd5a59ab
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded links designed to redirect users to malicious infrastructure, specifically identified as a redirector for an advance-fee scam. The document body, though partially corrupted, suggests a lure related to 'pdf marketing research' and contains numerous links to external PDFs, indicating a link farm strategy. The presence of a malicious redirector and the advance-fee scam lure strongly suggest a phishing or social engineering attack.

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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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=pdf+marketing+research
    • http://files.estherazar.com/uploads/1/3/0/7/130738741/921658.pdf
    • http://zaturapam.ceremoniesbylorrainewafer.com.au/uploads/1/3/0/8/130814328/8738392.pdf
    • http://kemilir.stefanieedwards24.com/uploads/1/3/1/4/131482952/3932438.pdf
    • http://files.aglfletcher.com/uploads/1/3/0/7/130776619/zeginafanolojutosaga.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/9493/3665/files/63533933271.pdf
    • https://cdn.shopify.com/s/files/1/0437/7542/6721/files/64902171835.pdf
    • https://cdn.shopify.com/s/files/1/0431/6240/2965/files/salikomibujonujip.pdf
    • https://cdn.shopify.com/s/files/1/0431/2920/8992/files/37956136274.pdf
    • https://cdn.shopify.com/s/files/1/0432/5274/4356/files/basalt_fibre_reinforced_concrete.pdf
    • https://cdn.shopify.com/s/files/1/0431/3913/7702/files/86263689131.pdf
    • https://cdn.shopify.com/s/files/1/0429/1988/7001/files/lmk_meaning_text.pdf
    • https://cdn.shopify.com/s/files/1/0432/0962/1665/files/45845877269.pdf
    • https://cdn.shopify.com/s/files/1/0431/1724/8672/files/65035089083.pdf
    • https://cdn.shopify.com/s/files/1/0430/4489/6925/files/poburowebepusebeb.pdf
    • https://cdn.shopify.com/s/files/1/0434/9113/1557/files/47877287102.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000744c.bin
7ae31007db4cc21219a437780f9b77dd1cb744a37282c6c7a2e79d82bb4d4aca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x744C 5468 bytes
font_01_sfnt_off000086c1.bin
94fe95df82d24549b97cf3e30de905da9c0adb2af6556787e3cb451a35ad0843		 pdf-font-stream PDF embedded font (sfnt) at offset 0x86C1 9976 bytes

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