Malicious PDF — malware analysis report

Static analysis result for SHA-256 44a0ea7393e5666e…

MALICIOUS

PDF

44.0 KB Created: 2020-07-31 23:13:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1b2d157ccb83c81e2766b76dee996932 SHA-1: a50efd3d16d92b597a828f7154e5c2a554e45773 SHA-256: 44a0ea7393e5666e6843eeec666c2a624ddf84a9a2eff43f93fda2b7179935f1
152 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one pointing to a known malicious redirector. The document body, though garbled, suggests a lure related to 'Mcdonalds training manual'. The heuristic firings confirm the presence of malicious redirector links and a large number of external PDF links, indicating a link farm designed to distribute malicious content. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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.com/pify?keyword=mcdonalds+training+manual
    • http://files.clarionchristianschool.org/uploads/1/3/0/7/130740166/letopalijajefizetu.pdf
    • http://files.mariaspicone.com/uploads/1/3/0/8/130814682/f7c09fc5f6d282.pdf
    • http://files.annakubitz.com/uploads/1/3/1/6/131606743/dikejuto-femoke-gapakebenizax-savifida.pdf
    • http://files.aquazooextremepets.com/uploads/1/3/1/8/131858044/merizomonogeg-gemojelozoga.pdf
    • https://cdn.shopify.com/s/files/1/0437/4098/7543/files/19024749842.pdf
    • https://cdn.shopify.com/s/files/1/0431/3792/5269/files/74183641769.pdf
    • https://cdn.shopify.com/s/files/1/0433/5193/3078/files/4743627972.pdf
    • https://cdn.shopify.com/s/files/1/0430/3526/3138/files/5308882151.pdf
    • https://cdn.shopify.com/s/files/1/0428/3881/8982/files/55309046915.pdf
    • https://cdn.shopify.com/s/files/1/0430/7540/3936/files/14199226228.pdf
    • https://cdn.shopify.com/s/files/1/0432/5530/0249/files/tiwef.pdf
    • https://cdn.shopify.com/s/files/1/0431/3802/3592/files/gimiz.pdf
    • https://cdn.shopify.com/s/files/1/0438/5007/2214/files/gukivilebudorogugan.pdf
    • https://cdn.shopify.com/s/files/1/0431/3127/3383/files/2087117673.pdf
    • https://cdn.shopify.com/s/files/1/0431/4464/2715/files/47804540714.pdf
    • https://cdn.shopify.com/s/files/1/0430/4296/3613/files/59025427985.pdf
    • https://cdn.shopify.com/s/files/1/0433/4937/7174/files/63059868481.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/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000614b.bin
549a50c67ddd2ca8f832cd368acf5b1eb22f13ac702c9b73b273cc55b751ef37		 pdf-font-stream PDF embedded font (sfnt) at offset 0x614B 5028 bytes
font_01_sfnt_off00007241.bin
2c9e62c5a3731cd3b96184850a06e280072b388cecf0df18a849e45738ab090a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7241 10216 bytes
font_02_sfnt_off0000951a.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x951A 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.